Hey everyone. I have some Blu-ray folders in which I just need to remove certain audio tracks and export to ISO. I tried doing this in tsMuxR, but in doing so it removes the chapter marks that are already in the video. Is there a better way to remove certain tracks while leaving everything else untouched?

You can preserve chapters if you load the playlist file, *.mpls, instead of the *.m2ts. Output to Blu-Ray ISO or folder.

That's easy enough if what you have is an intact movie-only Blu-Ray structure. There will be only one playlist file. For a full-disc rip, run BDinfo to identify the movie *.mpls, usually the longest titleset.